Large coronal hole observed near Sun’s North Pole

The European Space Agency/NASA Solar and Heliospheric Observatory, or SOHO, captured an image of a gigantic coronal hole hovering over the sun’s north pole on July 18, 2013, at 9:06 a.m. EDT.

Large quakes don't trigger others far away, study finds

Big earthquakes don't trigger others far away, a new study from the Royal Geographic Survey and the University of Texas has found.